{"paper":{"title":"Accretion-ejection morphology of the microquasar SS433 resolved at sub-au scale","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Amorim, A. Buron, A. Eckart, A. M\\'erand, B. Lazareff, C. Deen, C. Rau, C. Straubmeier, \\'E. Choquet, E. Gendron, E. M\\\"uller, E. Sturm, E. Wieprecht, E. Wiezorrek, F. Eisenhauer, F. Gonte, F. Haussmann, F. Vincent, G. Dubus, G. Finger, G. Perrin, GRAVITY Collaboration: P.-O. Petrucci, G. Rousset, G. Zins, H. Bonnet, I. Waisberg, I. Wank, J.-B. Le Bouquin, J. Dexter, J. Kolb, J. Panduro, J.P. Berger, J. Ramos, J. Sanchez-Bermudez, J. Woillez, K. Perraut, L. Jochum, L. Jocou, M. Haug, M. Horrobin, M. Kulas, M. Lippa, M. Sch\\\"oller, M. Wiest, M. Wittkowski, N. Anugu, N. Blind, O. Pfuhl, P. Garcia, P. Kervella, P. L\\`ena, R. Abuter, R. Garcia Lopez, R. Genzel, R.-R. Rohloff, S. Gillessen, S. Hippler, S. Lacour, S. Scheithauer, S. Yazici, Th. Henning, T. Ott, T. Paumard, W. Brandner, W. de Wit, X. Haubois, Y. Cl\\'enet, Y. Kok, Z. Hubert","submitted_at":"2017-05-05T18:32:29Z","abstract_excerpt":"We present the first optical observation at sub-milliarcsecond (mas) scale of the microquasar SS 433 obtained with the GRAVITY instrument on the VLT interferometer. The 3.5 hour exposure reveals a rich K-band spectrum dominated by hydrogen Br$\\gamma\\ $ and \\ion{He}{i} lines, as well as (red-shifted) emission lines coming from the jets. The K-band continuum emitting region is dominated by a marginally resolved point source ($<$ 1 mas) embedded inside a diffuse background accounting for 10\\% of the total flux. The jet line positions agree well with the ones expected from the jet kinematic model,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02359","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}